My job, and my life often, has me chopping and changing places, routines, people, roles etc etc I fly all over the place, meet new people, and a new job wherever i go. I not only have to cope with change, I have to welcome it. It does drain me, but I got to go with it.
However, I drop into a routine very quickly, and can get cranky if It unexpectedly changes or I can't do what I intend/expect to do when I want to do it.
But, we are all different, and I think the OP has the routine thing very rigid, which I understand is a thing for some aspies. The staff should be aware of that, and its bad form that they aren't.